Condylar position on the lateral individualized corrected tomography in internal derangement of temporomandibular joint

Kim, Keun Min; Hwang, Eui Hwan; Lee, Sang Rae

Abstract

PURPOSE: To examine the possible relationship between condylar position and disk displacement in the temporomandibular joint.
MATERIALS AND METHODS
79 temporomandibular joints in 40 patients having temporomandibular disorders were classified into three categories: no disk displacement (NDD), disk displacement with reduction (DDWR), and disk displacement without reduction (DDWOR). Disk positions were assessed from clinical and MRI findings. The relationship between the three categories and condylar positions was evaluated using lateral individualized corrected tomography.
RESULTS
Clinical findings regarding the relationship between condyle and disk positions having anterior, centric, and posterior positions were 27%, 27%, and 46%, respectively, in NDD, 43%, 17%, and 40%, respectively, in DDWR, and 44%, 22%, and 34%, respectively, in DDWOR. There were no significant differences in condylar positions between each of the groups (P>0.05). In the relationship between condyle and disk positions with MRI findings, anterior, centric, and posterior positions were 38%, 38%, and 24%, respectively, in NDD, 29%, 21%, and 50%, respectively, in DDWR, and 44%, 9%, and 47% respectively, in DDWOR. There were significant differences in the condylar positions when MRI was utilized (P<0.05)
CONCLUSION
There was a significant correlation between the condyle and disk positions with MRI findings on lateral individualized corrected tomography.